Clarke CAT 52 Instruction Manual

OPERATION & MAINTENANCE
INSTRUCTIONS
0807
4” ANGLE GRINDER
4” ANGLE GRINDER
MODEL NO: CAT 52
PART No: 3110685

Please note that the details and specifications contained herein are correct at the time of going to
print. However CLARKE International reserve the right to change specifications at any time without
prior notice. Always consult the machines data plate
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Fig.1
SPECIFICATIONS
Model: ...........................................................CAG52
Part Number: ................................................ 3110685
Rated Wheel ................................................Capacity: 4” x 1/4”
(type 27 depressed center)
Free Speed: ..................................................12000 RPM
Recom. Air Pressure: ....................................90 PSI
Ave. Air Consumption: .................................6 CFM
Spindle Thread size: ......................................3/8” UNF
Air Inlet: ......................................................... 1/4”
Hose Size: ...................................................... 3/8” ID
Length: ..........................................................8-3/4”
Weight: ..........................................................3.1 lbs

CLARKE GUARANTEE
This CLARKE product is guaranteed against faulty manufacture for a period
of 12 months from the date of purchase. Please keep your receipt as proof
of purchase.
This guarantee is invalid if the product is found to have been abused or
tampered with in any way, or not used for the purpose for which it was
intended.
Faulty goods should be returned to their place of purchase, no product
can be returned to us without prior permission.
This guarantee does not affect your statutory rights.
Please read these instructions carefully before operating the tool
Thank you for purchasing this CLARKE Air 4” Angle Grinder.
Before using the device, please read this manual thoroughly and carefully follow
all instructions given. This is for your own safety and that of others around you, and
is also to helpyou achieve long and trouble free service from your new tool.
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ACCESSORIES
A wide range of Airline accessories is available, including Filter/Regulators, Lubricators, High
Pressure Hoses from 5 to 100 Metres, etc. Contact your CLARKE dealer for further information,
or CLARKE International Sales Department on 01992 565300
PARTS & SERVICE TEL: [phone]
or e-mail as follows:
PARTS: [email protected]
SERVICE: [email protected]

SAFETY PRECAUTIONS
IMPORTANT
Failure to follow these precautions could
result in personal injury, and/or damage to
property.
❐When operating this tool, ALWAYS wear:
a. approved impact resistant SAFETY
GOGGLES. (Eye glasses are NOT
safety glasses)
b. a DUST MASK
c. EAR DEFENDERS
d. a good pair of INDUSTRIAL GLOVES
❐ALWAYS disconnect the tool when not
in use, and before carrying out any
maintenance
❐ALWAYS keep a safe distance between
yourself and other people when using
the tool.
❐ALWAYS maintain the tool with care.Keep
it clean for best and safest performance.
❐NEVER wear ill fitting clothing, remove
watches and rings.
❐Quick change couplings should not be
located at the tool. They add weight
and could fail due to vibration.
❐DO NOT over-reach. Keep your proper
footing and balance at all times.
❐DO NOT force or misuse the tool. It will
do a better and safer job at the rate for
which it was designed.
❐DO NOT abuse hoses or connectors.
NEVER carry a tool by the hose, or yank
it to disconnect from the air supply. Keep
hoses away from heat, oil and sharp
edges. Check hoses for leaks or worn
condition before use, and ensure that
all connections are secure.
❐DO NOT exceed 90 PSI at the tool.
❐DO NOT modify the tool in any way.
❐DO NOT remove any labels. Damaged
labels should be replaced.
❐This tool vibrates with use. Vibration may
be harmful to your hands or arms. Stop
using the tool if discomfort, a tingling
feeling or pain occurs. Seek medical
advice before resuming use.
❐ALWAYS use screens to protect people
in the vicinity from flying debris.
❐NEVER point the tool at anyone.
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WARNING
Compressed air can be
dangerous. Ensure that you are
thoroughly familiar with all
precautions relating to the use
of compressors and
compressed air supply.
AIR SUPPLY
Tools of this type, operate on a wide range
of air pressures. It is recommended that air
pressure to this tool does not exceed 90 PSI
(6.1bar), at the tool when running. Higher
pressure and unclean air, will shorten the tools’
life because of faster wear, and could be a
safety hazard.
Water in the air line will cause damage to
the tool, ensure it is properly maintained at
all times.
The recommended procedure to connect
this tool to an air supply, is shown at fig. 1 on
Inside front cover.
The air inlet used for connecting air supply,
has a standard ¼” BSP thread.
Line pressure, or hose inside diameter, should
be increased to compensate for unusually
long air hoses (over 10m). Minimum hose
diameter should be 6mm (¼") ID., and fittings
should have the same inside dimensions.
ASSEMBLY
Attach Handle (Item 56), Screw on tightly, Do
Not Overtighten, (No Tools Required).
With the air supply turned OFF, connect the
hose of the Angle Grinder to your airline.
Your Grinder is now ready for use.

Before starting work drain any water from the
air tank and blow condensation from the air
line. Drain compressor more frequently in hot
humid weather.
1. Ensure airline is disconnected from tool.
2. Remove Flange Nut (Item 54), Fit cutting
wheel, ensure hole in wheel fits snugly over
shoulder on flange (Item 52), Refit Flange
nut finger tight, ensure shoulder on Flange
Nut fits in hole on wheel.
3. Using wrenches supplied, fit wrench
(without pins) onto grinder arbor to
prevent turning, fit other wrench (with pins)
into the two holes in the Flange Nut. Hold
both wrenches firmly and tighten in
clockwise direction. Remove wrenches.
4. Connect airline and turn air ON.
5. Hold firmly using both hands, right hand
on motor body (Item 34) and left hand
on handle (Item 56).
6. To switch on, push throttle lever lock (Item
15) forward, at the same time depress
throttle lever. Allow grinder to reach full
speed and stabilise before continuing.
7. Gently offer grinding wheel to work
piece, DO NOT USE FORCE, allow the tool
to do the work for which it was designed.
IMPORTANT
ALWAYS keep wheel guard square to work
face, also DO NOT use side of wheel for
grinding, this could cause wheel to shatter
resulting in personal injury.
8. When finished grinding, with motor still
running take wheel away from work,
release throttle and wait for grinder to
stop before carefully putting it down.
WARNING
When fitting wheels , always inspect for
damage etc, NEVER use wheels if chipped
or cracked.
OPERATING INSTRUCTIONS MAINTENANCE
Daily before use.
1. Drain water from air tank, air line and
compressor.
2. Check and clean, if necessary, the air
inlet gauze filter .
3. Pour a few drops of CLARKE Air Line Oil
(approx 3cc), into the air inlet. This should
be carried out regardless of whether or
not an air line lubricator is used.
If an Air line lubricator is NOT used, this
procedure should be repeated after
every two to three hours of use.
If the grinder is to be stored, or is idle for longer
than 24 hours, run a few drops of Clarke Air
Line Oil into the air inlet, and run the tool for 5
seconds in order to lubricate the internal
parts.
For lubricating the air motor when in
operation, an air line lubricator should be
used, with Clarke Air Line Oil, adjusted to 2
drops per minute.
Clarke Air Line Oil is available from your
CLARKE dealer, part no. 3050825.
Be aware that factors other than the tool may
effect its operation and efficiency, such as
reduced compressor output, excessive drain
on the airline, moisture or restrictions in the
line, or the use of connectors of improper size
or poor condition which will reduce air supply.
Grit or gum deposits in the tool may also
reduce efficiency. This condition can be
corrected by cleaning the air strainer and
flushing out the tool with gum solvent oil,or
failing this, the tool should be dis-assembled,
thoroughly cleaned, dried and re-assembled.
If the tool runs erratically or becomes
inefficient, and the air supply is sound,
dismantle the air motor and replace worn or
damaged parts, or take the tool to your
CLARKE dealer.
IMPORTANT:
The use of parts other than CLARKE
replacement parts may result in safety
hazards, decreased tool performance
and may invalidate your warranty.
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PARTS DIAGRAM
PARTS LIST
No. Part No. Description Qty No. Part No. Description Qty
1 AG-30001 Exhaust Deflector 1 34 AG-40034 Motor Housing 1
3 AG-30003 Inlet 1 36 AG-30036 Motor Housing Shield 1
5 AG-30005 Motor Lock Nut 1 37 WW-0010 Wave Washer 1
6 AG-30006 Muffler Felt 1 38 BB-06252 Ball Bearing 1
7 AG-30007 Throttle Lever Pin 1 39 AG-30039 Bearing Spacer 1
8 AG-30008 Throttle Valve Hsg Plug 1 40 AG-30040 Hexagon Nut 1
9 ORP-0100 ‘O’ Ring 1 41 AG-40041 Bevel Gear 1
10 DG-14010 Ball Bearing 1 43 BB-62022 Ball Bearing 1
11 DG-14011 Throttle Valve Spring 1 44 AG-30044 Arbor 1
12 AG-30012 Throttle plunger 1 45 AG-30045 Bearing Cap 1
14 AG-30014 Throttle Lever 1 46 AG-30046 Center Weel Guard 1
15 DG-14027 Throttle Lever Lock 1 47 SW2-050A Spring Washer 3
16 DG-14028 Spring (Lever Lock) 1 48 S4-5012A Button Head Screw 3
17 SP-25220 Spring Pin 1 52 AG-30052 Flange 1
18 AG-30018 Rear End Plate Gasket 1 53 AG-30053 Flange Rubber Shield 1
20 BB-06062 Ball Bearing 1 54 AG-30054 Flange Nut 1
22 AG-30022 Rear End Plate 1 55 AG-30055 Handle Bracket 1
23 SP-25180 Spring Pin 1 56 AP-70047 Handle 1
24 AG-30024 Cylinder 1 - AG-30057 Wrench (not shown) 1
26 AG-30026 Vane Packet 4 - AG-30058 Wrench (not shown) 1
27 AG-30027 Rotor 1 59 AG-40059 Grinding Wheel 1
28 AG-30028 Spacer 1 60 DG-14045 Plunge Cap 1
29 AG-30029 Front End Plate 1 K01 AG-40K01 Throttle Lever Kit 1set
30 BB-60002 Ball Bearing 1 K02 AG-40K02 Throttle Valve Kit 1set
32 AG-40032 Bevel Pinion 1 K03 AG-40K03 Bevel Gear Kit 1set
33 AG-30033 ‘O’ Ring